Lock.



N'o. 717,855. PATENTED JAN. 6, 1903.

s. 0. HOUGHTON. v I

LOOK.

APPLICATION IILED MAY 4, 1900. RENEWED NOV- 10, .1902.

NO MODEL.

in. W is; 7'"

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UNITED STATES PATENT OFFICE.

STEPHEN C. HOUGI-ITON, OF SAN FRANCISCO, CALIFORNIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 717,855, dated January6, 1903. Application filed May 4:, 1900. Renewed November 10, 1902.Serial Rm 1 30,814. (No model.)

f all. whom, it nary concern:

Be it known that I, STEPHEN (J. HoUGnTox, a citizen of the UnitedStates, residing at San Frauciscofin the county of San Francisco andState of California, haveinvented certain new and useful Improvements inLocks, of which the following is a specification.

Mty invention relates to looks; and my object is to provide a strong,simple, cheap, and

' effective lock for windows which is also capable of use in doors,drawers, and other structures.

I shall hereinafter refer to a window as illustrative of any structureto be locked with which my invention is capable of use.

The principle of my invention can be embodied in three different typesof construction. One is a keyless lock which is completely controllablefrom the inside of the window, so that the latter can be moved in eitherdirection and can be locked when closed and at a certain height or, ifdesired, at any height. In another construction a key is necessary tomake the lock completely controllable from the inside and permit thewindow to be raised, but it is controllable independently of the key, sofar as unlocking and lowering the window are concerned. In the thirdconstruction the key is required in order to operate the lock and permitthe moving of the window in either direction. Locks embodying the saidconstructions and all containing the principle of my invention areillustrated in the accompanying drawings, in which Figure 1 is anelevation of a lock with faceplate removed, showing the keyless lockreferred to. Fig. 2 is a similar view of a keylock partly controllableindependently of the key. Fig. 3 is an end elevation of the locks shownin Figs. 1 and 2. Fig. 4 is an elevation of the lock of Fig. 2 inposition upon a window. Fig. 5 is a perspective view of the dog whichcontrols the bolt. Fig. 6 is a similar view of the bolt. Fig. 7 is aview of an appropriate key.

Figs. 1 and 2 illustrate the lock on an enlarged scale. Fig. at showsabout the actual size of the lock. The lock-casing A, Fig. 1, may becast or formed in one piece and is provided with a closing-plate B. Inone end of the casing is a slot 1, through which the gravity-bolt 0projects. In the opposite end is a slot 2, through which the handle ofthe dog D projects. The bolt is pi voted within the case, the preferredmounting being shown in the drawings. The bolt has a round boss 3,whichfits the seat 4:, the latter forming part of the casing. The dog Dpreferably is also provided with a round boss 7 to fit a bearing 8 ofthe case. These loose mountings enable the parts to be assembled inposition without the use of pins or pivots, and I therefore prefer touse them as affording a very strong, cheap, and simple construction.However, both the bolt and the dog can be mounted on pins, if desired.Both the bolt and dog are gravity depriate locking positions, the boltprojecting through the case which is secured to the Windew and into arecess 5 in the window-frame E and the dog resting in a notch 6 in theupper edge of the bolt. In this position the vices which fallautomaticallyinto their approwindow is locked by the bolt, while thebolt is in turn locked by the dog. The Window cannot be raised becauseof the solid bearing of the bolt upon the lower end of slot 1, and itcannot be lowered because of the dead-line of resistance from the notch6 through to the pivot of the dog, whether such pivot be a pin or thecurved seat 8. The lock shown in Fig. 1 is keyless and entirelycontrollable from the inside of the window. The dog is formed with ahandle 9, which projects through the slot 2, so that it can be operatedas a. lever. The pivoted end of the bolt has a projection 10 below thishandle. By moving the handle downward the dog is first disengaged fromthe notch G, and if the movement be continued the projection 10 isstruck by the handle 9 and the free end of the bolt is caused to followthe dog upwardly, as shown in dotted lines, until it has been withdrawncompletely into the lock-casing, leaving the window free to be moved ineither direction. If a series of recesses 5 is used, the window locksitself automatically at any desired height as soon as the lever isreleased, and both bolt and dog are permitted to drop into theirrespective locking positions.

In some cases, as in car-windows, it may be desirable to allowpassengers to control the closing of a window, but compel them to callfor assistance in opening it. In such cases the lock shown in Figs. 2and 4: may be employed. The changes in construction necessary to convertthe lock, Fig. 1, to a lock of the type shown in Fig. 2 are very slight.The projection 10 is removed from the bolt. A key-seat 11 is formed inthe lower edge of the dog and a key-seat 12 in the adjacent upper edgeof the bolt. These seats may be simple curved recesses, as shown. Meansare provided for the insertion of a key through the front plate of thelock, such as the movable key-disk 13 shown, which is journaled in theface plate of the lock and is provided with a key-slot or with holes, asshown, according to the kind of key used. I have illustrated in Fig. 7 akey F having pins 14, which enter the keydisk and the key-seats in dogand bolt, respectively. \Vith the parts in the position of Fig. 2 if thewindow be closed it cannot be opened without the key, but if the windowbe raised and locked it can be lowered without using the key bydepressing the handle of the dog and raising the latter from engagementwith the bolt. The bolt can now yield to any downward pressure on thewindow and will move back into the lock-casing when such a pressure isexerted. In order to raise the window, the key must be employed topositively move the bolt. The key-seats are so arranged that the keybears upon the dog and lifts it before bearing upon and raising thebolt- This is shown in Fig. 2, where the small dotted circles indicatethat on turning the key in the usual way its upper pin will actimmediately upon the dog, while the lower pin moves some distance beforestriking the bolt.

In the third form of lock, in which the entire device is controllable bythe key, the only change in construction from Fig. 2 is to remove theprojecting handle of the dog and render the parts inaccessible byclosing the of the case in the Patent Ofiice.

[SEAL.]

Correction in Letters Patent No. 717,855.

slot 2. In this case the key is required either in opening or closingthe window, since the dog cannot be operated independently of it.

It will be observed that the locking-bolt when raised is at such anangle to the window-casing that it can have no binding action againstsaid casing in the upward movement of the window.

I do not confine myself to details of construction herein described, andshown in the drawings, as I desire to avail myself of such modificationsand equivalents as fall properly within the spirit of my invention.

Having thus fully described myinvention, what I claim as new, and desireto secure by Letters Patent, is-

1. A lock comprising a casing, a gravitybolt pivoted therein, and havingboth ends normally projecting from opposite ends of the casing, and apivoted gravity-dog, adapted to rest upon and lock said bolt and havinga handle projecting from the casing; the parts being constructed andarranged so that the depression of said handle first disengages the dog,and subsequently lifts the bolt by pressure upon one of its projectingends.

2. The combination with a lock-casing provided with integral ribs orshoulders, forming seats, of a gravity-bolt loosely pivoted in one ofsaid seats without pins or other securing devices, a gravity-dogsimilarly pivoted and adapted to engage and lock said bolt, and meansfor successivelyoperating said lock and said bolt.

In testimony whereof I have affixed my signature,in the presence of twowitnesses, this 25th day of April, 1900.

STEPHEN C. I-IOUGHTON.

Witnesses:

L. W. SEELY, F. M. BURT.

It is hereby certified that in Letters Patent No. 717,855, granted Jannary 6, 1903, upon the application of Stephen C. Houghton, of SanFrancisco, California, for an improvement in Locks, an error appears inthe printed specification requiring correction, as follows: On page 1,the words and syllables vices which fall automatically into their approcomprising line 73, should be stricken out and inserted as a line afterline 66, as now numbered, same page; and that the said Letters Patentshould be read with this correction therein that the same may conform tothe record Signed and sealed this 27th day of January, A. 1)., 1903.

F. I. ALLEN,

Commissioner of Patents.

It is hereby certified that in Letters Patent No. 7l7,855, grantedJanuary (5, 1903, upon the application of Stephen C. I'I()Uglll()l1,0fSan Francisco, California, for an improvement in Locks, an error appearsin the printed specification requiring correction, as follows: On page1, the words and syllables vices which fall automatically into theirapprocomprising line 73, should he stricken out and inserted asa lineafter line 66, as now numbered, same page; and that the said LettersPatent should be read with this correction therein that the same mayconform to the record of the case in the Patent Ofiice.

Signed and sealed this 27th day of January, A. D, 1903.

F. I. ALLEN,

Commissioner of Patents.

[SEAL]

